2 * Copyright (c) 2008 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Simon 'corecode' Schubert <corecode@fs.ei.tum.de>.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 #include <sys/param.h>
36 #include <sys/queue.h>
38 #include <sys/types.h>
60 static void deliver(struct qitem *);
62 struct aliases aliases = LIST_HEAD_INITIALIZER(aliases);
63 struct strlist tmpfs = SLIST_HEAD_INITIALIZER(tmpfs);
64 struct virtusers virtusers = LIST_HEAD_INITIALIZER(virtusers);
65 struct authusers authusers = LIST_HEAD_INITIALIZER(authusers);
66 struct config *config;
68 const char *logident_base;
70 static int daemonize = 1;
73 set_from(const char *osender)
78 if ((config->features & VIRTUAL) != 0) {
79 SLIST_FOREACH(v, &virtusers, next) {
80 if (strcmp(v->login, username) == 0) {
81 sender = strdup(v->address);
90 sender = strdup(osender);
94 if (asprintf(&sender, "%s@%s", username, hostname()) <= 0)
98 if (strchr(sender, '\n') != NULL) {
110 yyin = fopen(config->aliases, "r");
112 return (0); /* not fatal */
114 return (-1); /* fatal error, probably malloc() */
120 add_recp(struct queue *queue, const char *str, const char *sender, int expand)
122 struct qitem *it, *tit;
129 it = calloc(1, sizeof(*it));
132 it->addr = strdup(str);
133 if (it->addr == NULL)
137 host = strrchr(it->addr, '@');
139 (strcmp(host + 1, hostname()) == 0 ||
140 strcmp(host + 1, "localhost") == 0)) {
143 LIST_FOREACH(tit, &queue->queue, next) {
144 /* weed out duplicate dests */
145 if (strcmp(tit->addr, it->addr) == 0) {
151 LIST_INSERT_HEAD(&queue->queue, it, next);
152 if (strrchr(it->addr, '@') == NULL) {
155 LIST_FOREACH(al, &aliases, next) {
156 if (strcmp(al->alias, it->addr) != 0)
158 SLIST_FOREACH(sit, &al->dests, next) {
159 if (add_recp(queue, sit->str, sender, 1) != 0)
165 LIST_REMOVE(it, next);
167 /* Local destination, check */
168 pw = getpwnam(it->addr);
171 /* XXX read .forward */
188 readmail(struct queue *queue, const char *sender, int nodot)
190 char line[1000]; /* by RFC2822 */
195 int had_messagid = 0;
198 error = fprintf(queue->mailf,
199 "Received: from %s (uid %d)\n"
200 "\t(envelope-from %s)\n"
209 if ((ssize_t)error < 0)
212 while (!feof(stdin)) {
213 if (fgets(line, sizeof(line), stdin) == NULL)
215 linelen = strlen(line);
216 if (linelen == 0 || line[linelen - 1] != '\n') {
217 errno = EINVAL; /* XXX mark permanent errors */
221 if (strprefixcmp(line, "Date:") == 0)
223 else if (strprefixcmp(line, "Message-Id:") == 0)
225 else if (strprefixcmp(line, "From:") == 0)
228 if (strcmp(line, "\n") == 0 && !had_headers) {
230 while (!had_date || !had_messagid || !had_from) {
233 snprintf(line, sizeof(line), "Date: %s\n", rfc822date());
234 } else if (!had_messagid) {
235 /* XXX better msgid, assign earlier and log? */
237 snprintf(line, sizeof(line), "Message-Id: <%s@%s>\n",
238 queue->id, hostname());
239 } else if (!had_from) {
241 snprintf(line, sizeof(line), "From: <%s>\n", sender);
243 if (fwrite(line, strlen(line), 1, queue->mailf) != 1)
248 if (!nodot && linelen == 2 && line[0] == '.')
250 if (fwrite(line, strlen(line), 1, queue->mailf) != 1)
257 static struct qitem *
258 go_background(struct queue *queue)
264 if (daemonize && daemon(0, 0) != 0) {
265 syslog(LOG_ERR, "can not daemonize: %m");
270 bzero(&sa, sizeof(sa));
271 sa.sa_flags = SA_NOCLDWAIT;
272 sa.sa_handler = SIG_IGN;
273 sigaction(SIGCHLD, &sa, NULL);
275 LIST_FOREACH(it, &queue->queue, next) {
276 /* No need to fork for the last dest */
277 if (LIST_NEXT(it, next) == NULL)
283 syslog(LOG_ERR, "can not fork: %m");
291 * return and deliver mail
295 * If necessary, aquire the queue and * mail files.
296 * If this fails, we probably were raced by another
299 setlogident("%s", it->queueid);
300 if (aquirespool(it) < 0)
302 dropspool(queue, it);
315 syslog(LOG_CRIT, "reached dead code");
320 bounce(struct qitem *it, const char *reason)
322 struct queue bounceq;
328 /* Don't bounce bounced mails */
329 if (it->sender[0] == 0) {
330 syslog(LOG_INFO, "can not bounce a bounce message, discarding");
334 LIST_INIT(&bounceq.queue);
335 if (add_recp(&bounceq, it->sender, "", 1) != 0)
338 if (newspoolf(&bounceq, "") != 0)
341 syslog(LOG_ERR, "delivery failed, bouncing as %s", bounceq.id);
342 setlogident("%s", bounceq.id);
344 error = fprintf(bounceq.mailf,
345 "Received: from MAILER-DAEMON\n"
349 "X-Original-To: <%s>\n"
350 "From: MAILER-DAEMON <>\n"
352 "Subject: Mail delivery failed\n"
353 "Message-Id: <%s@%s>\n"
356 "This is the %s at %s.\n"
358 "There was an error delivering your mail to <%s>.\n"
369 bounceq.id, hostname(),
374 config->features & FULLBOUNCE ?
375 "Original message follows." :
376 "Message headers follow.");
380 if (fseek(it->mailf, it->hdrlen, SEEK_SET) != 0)
382 if (config->features & FULLBOUNCE) {
383 while ((pos = fread(line, 1, sizeof(line), it->mailf)) > 0) {
384 if (fwrite(line, 1, pos, bounceq.mailf) != pos)
388 while (!feof(it->mailf)) {
389 if (fgets(line, sizeof(line), it->mailf) == NULL)
393 if (fwrite(line, strlen(line), 1, bounceq.mailf) != 1)
398 if (linkspool(&bounceq, "") != 0)
404 bit = go_background(&bounceq);
409 syslog(LOG_CRIT, "error creating bounce: %m");
415 deliver(struct qitem *it)
418 unsigned int backoff = MIN_RETRY;
419 const char *errmsg = "unknown bounce reason";
424 syslog(LOG_INFO, "trying delivery");
427 error = deliver_remote(it, &errmsg);
429 error = deliver_local(it, &errmsg);
434 syslog(LOG_INFO, "delivery successful");
438 if (stat(it->queuefn, &st) != 0) {
439 syslog(LOG_ERR, "lost queue file `%s'", it->queuefn);
442 if (gettimeofday(&now, NULL) == 0 &&
443 (now.tv_sec - st.st_mtimespec.tv_sec > MAX_TIMEOUT)) {
444 asprintf(__DECONST(void *, &errmsg),
445 "Could not deliver for the last %d seconds. Giving up.",
451 if (backoff > MAX_RETRY)
466 run_queue(struct queue *queue)
470 if (LIST_EMPTY(&queue->queue))
473 it = go_background(queue);
479 show_queue(struct queue *queue)
482 int locked = 0; /* XXX */
484 if (LIST_EMPTY(&queue->queue)) {
485 printf("Mail queue is empty\n");
489 LIST_FOREACH(it, &queue->queue, next) {
490 printf("ID\t: %s%s\n"
496 it->sender, it->addr);
504 * - use group permissions
505 * - proper sysexit codes
509 main(int argc, char **argv)
516 int nodot = 0, doqueue = 0, showq = 0;
519 LIST_INIT(&queue.queue);
521 if (strcmp(argv[0], "mailq") == 0) {
525 errx(1, "invalid arguments");
530 while ((ch = getopt(argc, argv, ":A:b:B:C:d:Df:F:h:iL:N:no:O:q:r:R:UV:vX:")) != -1) {
533 /* -AX is being ignored, except for -A{c,m} */
534 if (optarg[0] == 'c' || optarg[0] == 'm') {
537 /* else FALLTRHOUGH */
539 /* -bX is being ignored, except for -bp */
540 if (optarg[0] == 'p') {
544 /* else FALLTRHOUGH */
549 logident_base = optarg;
557 /* -oX is being ignored, except for -oi */
558 if (optarg[0] != 'i')
560 /* else FALLTRHOUGH */
571 /* Ignored options */
594 fprintf(stderr, "invalid argument: `-%c'\n", optopt);
602 if (argc != 0 && (showq || doqueue))
603 errx(1, "sending mail and queue operations are mutually exclusive");
605 if (showq + doqueue > 1)
606 errx(1, "conflicting queue operations");
609 if (logident_base == NULL)
610 logident_base = "dma";
614 /* XXX fork root here */
616 config = calloc(1, sizeof(*config));
620 if (parse_conf(CONF_PATH) < 0) {
622 errlog(1, "can not read config file");
625 if (config->features & VIRTUAL)
626 if (parse_virtuser(config->virtualpath) < 0)
627 errlog(1, "can not read virtual user file `%s'",
628 config->virtualpath);
630 if (parse_authfile(config->authpath) < 0)
631 errlog(1, "can not read SMTP authentication file");
634 if (load_queue(&lqueue) < 0)
635 errlog(1, "can not load queue");
641 if (load_queue(&lqueue) < 0)
642 errlog(1, "can not load queue");
647 if (read_aliases() != 0)
648 errlog(1, "can not read aliases file `%s'", config->aliases);
650 if ((sender = set_from(sender)) == NULL)
653 for (i = 0; i < argc; i++) {
654 if (add_recp(&queue, argv[i], sender, 1) != 0)
655 errlogx(1, "invalid recipient `%s'", argv[i]);
658 if (LIST_EMPTY(&queue.queue))
659 errlogx(1, "no recipients");
661 if (newspoolf(&queue, sender) != 0)
662 errlog(1, "can not create temp file");
664 setlogident("%s", queue.id);
666 if (readmail(&queue, sender, nodot) != 0)
667 errlog(1, "can not read mail");
669 if (linkspool(&queue, sender) != 0)
670 errlog(1, "can not create spools");
672 /* From here on the mail is safe. */
674 if (config->features & DEFER)
677 it = go_background(&queue);